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App Inventor 2 低功耗蓝牙 BlueToothLE 拓展 · App Inventor 2 中文网
...的。shortFloat 参数指示浮点数是 16 位半精度浮点数还是 32 位单精度浮点数。读取浮点数后，将触发 FloatsReceived 事件。
参数:
serviceUuid (text) —
在读取或注册调用中传递的服务UUID。
characteristicUuid (text) —
...
Long vs Integer, long vs int, what to use and when?
...nd Integer is the object form of int.
The long uses 64 bits. The int uses 32 bits, and so can only hold numbers up to ±2 billion (-231 to +231-1).
You should use long and int, except where you need to make use of methods inherited from Object, such as hashcode. Java.util.collections methods usual...
Get last result in interactive Python shell
... every result with _ and its numeric value
In [1]: 10
Out[1]: 10
In [2]: 32
Out[2]: 32
In [3]: _
Out[3]: 32
In [4]: _1
Out[4]: 10
In [5]: _2
Out[5]: 32
In [6]: _1 + _2
Out[6]: 42
In [7]: _6
Out[7]: 42
And it is possible to edit ranges of lines with the %ed macro too:
In [1]: def foo():
...
Objective-C implicit conversion loses integer precision 'NSUInteger' (aka 'unsigned long') to 'int'
...as unsigned long, and
unsigned long is a 64-bit unsigned integer.
int is a 32-bit integer.
So int is a "smaller" datatype than NSUInteger, therefore the compiler warning.
See also NSUInteger in the "Foundation Data Types Reference":
When building 32-bit applications, NSUInteger is a 32-bit un...
Obfuscated C Code Contest 2006. Please explain sykes2.c
...g:
main(_) {
_^448 && main(-~_);
putchar(--_%64
? 32 | -~7[__TIME__-_/8%8][">'txiZ^(~z?"-48] >> ";;;====~$::199"[_*2&8|_/64]/(_&2?1:8)%8&1
: 10);
}
Introducing variables to untangle this mess:
main(int i) {
if(i^448)
main(-~i);
...
How to extract img src, title and alt from html using php? [duplicate]
...img src="http://www.gravatar.com/avatar/df299babc56f0a79678e567e87a09c31?s=32&d=identicon&r=PG" height=32 width=32 alt="gravatar image" />
[4] => <img class="vote-up" src="/content/img/vote-arrow-up.png" alt="vote up" title="This was helpful (click again to undo)" />
...
Purpose of memory alignment
...
ejohnso49
63299 silver badges1616 bronze badges
answered Dec 19 '08 at 15:20
Paul TomblinPaul Tomblin
...
How to write log base(2) in c/c++
...
@Joey That would work assuming integer is 32 bit wide, no ? For 64 bit it would have an extra i>>32 . But since Java has only 32-bit ints, it is fine. For C/C++ it needs to be considered.
– Zoso
May 27 '17 at 8:12
...
Maximum length for MD5 input/output
... a fixed-length output of 128 bits, typically represented as a sequence of 32 hexadecimal digits.
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How can I get a count of the total number of digits in a number?
...s (discussed below), depending on your choice of Platform / Framework.
Int32 version:
public static class Int32Extensions
{
// IF-CHAIN:
public static int Digits_IfChain(this int n)
{
if (n >= 0)
{
if (n < 10) return 1;
if (n < 100) retu...